866232669 has 12 divisors (see below), whose sum is σ = 1159431104. Its totient is φ = 575265624.

The previous prime is 866232643. The next prime is 866232677. The reversal of 866232669 is 966232668.

It is not a de Polignac number, because 866232669 - 2¹¹ = 866230621 is a prime.

It is a super-2 number, since 2×866232669² = 1500718073685727122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (866232769) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 976144 + ... + 977030.

Almost surely, 2^866232669 is an apocalyptic number.

It is an amenable number.

866232669 is a deficient number, since it is larger than the sum of its proper divisors (293198435).

866232669 is an frugal number, since it uses more digits than its factorization.

866232669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2144 (or 1257 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 48.

The square root of 866232669 is about 29431.8308808677. The cubic root of 866232669 is about 953.2603285606.

Subtracting 866232669 from its reverse (966232668), we obtain a palindrome (99999999).

The spelling of 866232669 in words is "eight hundred sixty-six million, two hundred thirty-two thousand, six hundred sixty-nine".